Dental-engine attachment.



1'0 (alt 10b/07m it naa/y concern:

Be it known that I, JOHN E. MORGAN, acitizen of the United States, resi-ding at Emporia, in the county of Lyon and State of Kansas, 3' have invented a new and useful Improvement f in Dental-Engine Attachments, of which the following is a specification. i My invention is in the nature of a dentalengine attachment designed to furnish a con- OI tinuous blast of air to blow the chips from the cavity of a tooth as fast as they are drilled,

UNITED STATES PATENT JOHN E. MORGAN, OF EMPORIA, KA

SPECIFICATION forming part of Letters Patent No. 786,662,

Patented April 4, 1905.

OEEICE.

NSAS.

DENTAL-ENGINE ATTACHMENT.

dated April 4, 1905.

Application led August l2, 1904` Serial No. 220,537.

described about the pivotal center o4. ing through this slot and through the n the fork a a is a clam p-screw o, by angular position of journal-frame D D in relation to th justed or regulate the dentist.

As so far d known type. cular fan-case eck of which thc and shaft e standard O may be add to suit the convenience of 55 escribed, the engine is of a well- My attachment com prises a ci rl, which has formed on or attached to it an arm 4, projecting from the 60 thereby saving much time by rendering it unperiphery of the fan-case at right angles to ynecessary to stop the drill for this purpose the case'or parallel to the axis of the fan. and also reducing the pain of this operation This arm is slotted or forked at its ou ter end, 5 by keeping the drill cool and avoiding the i and this slot receives the inner edge of the heat due to friction. curved plate d, and a screw 5 securely clamps 65 My invention consists in a simple and novel arm L and the supported fan-case to the plate fan-blower so constructed as to be mounted of the journal-frame D/ of the engine. The Aon the upper portion of the ordinary dental fan-case arm 4 projects through or between O; engine and be operated by the same belt which the two branches o a of the fork, so that the Ioperates the drill and provided with a blastfan-case is on the opposite side of the stand- 7o tube leading to a nozzle mounted on the handl ard O from the plate a. The fan-case l is piece in such proximity to its drill as to prop- I provided with a central inlet-opening 8 on the ,'erly direct the blast into the cavity of the I outer side of the fan-case and has a tangen- Slitooth. tially-arranged discharge-spout 3 at the top,

I Figure lis a perspective view of a dental which spout connects with a iiexible rubber 75 I'engine equipped with my attachment. Fig. 2 I hose 6. This rubber hose is connected at in- ,iis an enlarged perspective View, partly broken tervals along the fiexible shaft E and at the aWay, showing the manner of mounting my end communicates with a detachable nozzle 7,

0 attachment on the dental engine and operat- (see Fig. 3,) detachably connected to the handing it thereby; and Fig. 3 is a detail of the piece by a sleeve 10 and so positioned as to 8o ,lhandpiece and blast-nozzle. direct the blast of air to the pointof the drill.

In the drawings, Fig. 1, A represents the lVithin the fan-case is a rotary fan 9, whosev A treadle; B, the grooved iiy-wheel; O, the upshaft extends through the inner side of the 5 right standard; D, the horizontal shaft at the case and is provided with a small pulley 2,

top thereof; E, the liexible power-shaft, and which bears against the cord belt of the en- 85 the handpiece of the ordinary dental engine and derives therefrom a rapid rotation Sgine.` In this engine a cord belt extends l to cause the fan to send a strong' blast of air `from the grooved y-whcel to a small pulley through the hose-pipe 6 to the nozzle at thc cZ, which is connected to shaft D and imparts handpiece.

axial rotation to the iiexible shaft E and to It will be seen that the special construction 9o ,the drill or other tool within the handpiece. i and arrangement of the fan-case and supporti The upper end of the standard O is formed l ing-arm brings the fan in proper relation to lwith a fork, (see Fig. 2,) between whose be not only driven by the same belt which libranches a t is pivoted at a* the journal-frame runs the drill, but also allows the fan attachiD', which carries the end of the shaft D and ment to follow the adjustments of the journal- 95 iits attached driving-pulley d. To the journalframe D is attached a downwardly-projectiug gant curved plate a, havlng a circular slot l cal device for the purpose in- Pass- 50 upper end oi the sanne, a tilting frame arranged in said fork and bearing a shaft and its pulley and abelt driving said puiley; in combination with a rotary fan having a supporting-afin extended between the forks ot the dental engine and secured to the tilting frame, and a pulley for said fan operated by the dental-engine belt substantially as de scribed.

a. A dental engine comprising an upright standard, a forked support mounted on the upper end oi' the same, a tilting frame piv eted in the forked support and having a curved, slotted, and downWardly-projecting plate `with means for lixing its adjustment, a shaft with pulley mounted in the tilting frame, A a belt 'for driving the pulley, a rotary 'fan hay'- ing a central opening` in its side and a tangential delivery-spout and an arm projecting at i right angles to the ian and extended through the fork of the dental engine and secured to `5C the curved and slotted plate and a pulley for l the fan operated by the dental-engine belt substantially as shown and described.

JOHN E. MGRGAN.

an` aware that air-blast devices have been heretofore used in connection with a dental engine, and i do not claim this idea broadly.

Having thus described my invention, what I l. claim as new, and desire to secure by Letters Patent, is-

l. A blowing attachment for a dental engine, cannprising rotary fan having a central intake-opening and a tangential spout, a pulley arranged on the fan-shaft, means 'for supporting the attachment on the dental engine and operating it from the dental-engine belt and a hose and nozzle for carrying the ai r-blast substantially as described.

2. A dental engine comprising in its construction an upright standard, a shaft-support secured to its vupper ent, a rigid shaft jourualed in said support, a pulley tast on one end of the shaft, a flexible shaft operatively connected to the opposite end and a driving belt passing around said pulley; in combination with a rotaryr fan arranged in a plane parallel to that of the shaft-pulley and on the opposite side ol said pulley `trom the iiexible shaft, and a driving-pulley arranged on the iian-shaiit to bear against the dental-engine belt substantially as shown and described.

3. A dental engine comprising an upright standart-l, a l'orled support mounted on the Vlitnesses: g

H. LLEWELYN dones, Isaac JENNiNGs. 

